What is factor 9a^2-15a+4 ?

The solution to factor 9a^2-15a+4 is (3a-1)(3a-4)

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factor 9a^2-15a+4

factor

9 a^{2} - 15 a + 4

(3 a - 1) (3 a - 4)

Solution steps

9 a^{2} - 15 a + 4

Break the expression into groups

= (9 a^{2} - 3 a) + (- 12 a + 4)

Factor out

3 a

from

9 a^{2} - 3 a : 3 a (3 a - 1)

Factor out

- 4

from

- 12 a + 4 : - 4 (3 a - 1)

= 3 a (3 a - 1) - 4 (3 a - 1)

Factor out common term

3 a - 1

= (3 a - 1) (3 a - 4)

2 r + (t + r)

4 (1 - 3 x) + 7 x = 9

(x - 5)^{2} = - 5

2 π r = 20

- \frac{13}{30} + \frac{25}{42}